Gas turbine combustor exit piece with hinged connections

摘要

An exit piece (66) with an inlet throat (67) that conducts a combustion gas flow (36A) in a path (82) from a combustor (63) to an annular chamber (68) that feeds the first blade section (37) of a gas turbine (26). The exit piece further includes an outlet portion (69) that forms a circumferential segment of the annular chamber. The outlet portion interconnects with adjacent outlet portions by hinges (78A, 78B, 80A, 80B). Each hinge may have a hinge axis (82A, 82B) parallel to a centerline (21) of the turbine. Respective gas flows (36A) are configured by an assembly (60) of the exit pieces to converge on the feed chamber (68) into a uniform helical flow that drives the first blade section with minimal circumferential variations in force.

主权项

1. An exit piece for conducting combustion gas from a combustor to a first stage of turbine blades of a gas turbine engine, the exit piece comprising:
an inlet portion; and an outlet portion comprising a circumferentially upstream end and a circumferentially downstream end relative to a direction of rotation of a rotor shaft about an engine centerline; wherein each circumferential end of the outlet portion comprises a radially inner hinge part and a radially outer hinge part relative to the engine centerline; and wherein each of the hinge parts is configured to directly hingedly connect to a mating hinge part on a respective adjacent outlet portion of an adjacent exit piece when assembled in the gas turbine engine.